Used as a catalyst in organic synthesis, particularly in coupling reactions such as Ullmann and Glaser reactions, enabling the formation of carbon-carbon bonds. Commonly employed in the textile industry for dyeing and printing processes due to its ability to form stable complexes with dyes. Acts as a wood preservative by inhibiting fungal and bacterial growth. Utilized in agricultural formulations as a component of fungicides and micronutrient supplements. Also applied in the preparation of other copper-based chemicals and in electroplating solutions to improve conductivity and deposit quality.